US3261945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature responsive magnetic switch
Assignee: Motors Liquidation Co
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Filing: 1964-06-29
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Granted: 1966-07-19
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard S Gaugler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:36
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/32; H01H37/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A TEMPERATURE RESPONSIVE SWITCH THE COMBINATION OF, A FIRST PAIR OF POLE PIECES AND A SECOND PAIR OF POLE PIECES, A SELECTIVELY MAGNETIZABLE SWITCHING ELEMENT ARRANGED BETWEEN AT LEAST ONE PAIR OF SAID POLE PIECES, PERMANENT MAGNET MEANS ASSOCIATED WITH SAID MAGNETIZABLE SWITCHING ELEMENT AND COACTING THEREWITH TO PRODUCE A FIRST PREDETERMINED DIFFERENTIAL FLUX PATTERN IN SAID FIRST AND SECOND PAIR OF POLE PIECES, MOVABLE ARMATURE MEANS RESPONSIVE TO SAID PREDETERMINED DIFFERENTIAL FLUX PATTERN TO BE DRAWN TOWARD ONE OF SAID PAIR OF POLE PIECES, SAID SWITCHING ELEMENT HAVING A LOW MAGNETIZATION BELOW A PREDETERMINED TEMPERATURE AND A HIGH MAGNETIZATION IMMEDIATELY ABOVE THE CRITICAL TEMPERATURE, SAID SWITCHING ELEMENT UPON SENSING THE CRITICAL TEMPERATURE PRODUCING A REVERSAL IN SAID FIRST PREDETERMINED FLUX PATTERN TO CAUSE SAID MOVABLE ARMATURE MEANS TO BE ATTRACTED TO THE OTHER OF SAID PAIR OF POLE PIECES.
Claim 2
Dependent Claim
141 words
IN A TEMPERATURE RESPONSIVE SWITCH THE COMBINATION OF, A FIRST PAIR OF POLE PIECES AND A SECOND PAIR OF POLE PIECES, A SELECTIVELY MAGNETIZABLE SWITCHING ELEMENT ARRANGED BETWEEN AT LEAST ONE PAIR OF SAID POLE PIECES, PERMANENT MAGNET MEANS ASSOCIATED WITH SAID MAGNETIZABLE SWITCHING ELEMENT AND COACTING THEREWITH TO PRODUCE A FIRST PREDETERMINED DIFFERENTIAL FLUX PATTERN IN SAID FIRST AND SECOND PAIR OF POLE PIECES, MOVABLE ARMATURE MEANS RESPONSIVE TO SAID PREDETERMINED DIFFERENTIAL FLUX PATTERN TO BE DRAWN TOWARD ONE OF SAID PAIR OF POLE PIECES, SAID SWITCHING ELEMENT HAVING A LOW MAGNETIZATION BELOW A PREDETERMINED TEMPERATURE AND A HIGH MAGNETIZATION IMMEDIATELY ABOVE THE CRITICAL TEMPERATURE, SAID SWITCHING ELEMENT UPON SENSING THE CRITICAL TEMPERATURE PRODUCING A REVERSAL IN SAID FIRST PREDETERMINED FLUX PATTERN TO CAUSE SAID MOVABLE ARMATURE MEANS TO BE ATTRACTED TO THE OTHER OF SAID PAIR OF POLE PIECES.
References Cited (Backward Citations)
US822323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |